Convert KW to HP, Free
Type any KW value and see the HP result instantly. No button press needed.
How to convert KW to HP
Kilowatts and horsepower both measure power (the rate of energy transfer), but they originate from different measurement traditions. Kilowatts are the SI metric unit used in official vehicle certifications across most of the world and in electrical appliance ratings. Horsepower is the traditional unit found on US vehicle specifications, engine datasheets, and power tool labels.
The conversion factor is 1 kW = 1.34102 hp (mechanical horsepower). This tool applies the exact factor. When reading European car brochures that list both values, the kW number is always smaller than the hp number, and this converter lets you cross-reference them instantly.
Enter the kW value
Type the kilowatt power rating. Decimals like 110.5 are accepted.
Read the horsepower result
The converter multiplies by 1.34102 and displays the mechanical horsepower equivalent.
Compare across markets
Use the hp result to compare a European car's kW rating against US vehicles that quote power in hp.
Reverse if needed
To convert hp to kW, divide by 1.34102 or use the hp-to-kW converter.
Frequently asked questions
How many horsepower is 1 kilowatt?
1 kW = 1.34102 mechanical horsepower. To convert roughly in your head, multiply kW by 1.34.
What is 100 kW in horsepower?
100 x 1.34102 = 134.1 hp. A 100 kW car is roughly equivalent to a 134 hp car in US terms.
What is the difference between electric motor kW and vehicle engine hp?
Both measure the same physical quantity (power), just in different units. Electric cars rated in kW can be directly compared to gasoline cars rated in hp using this converter. A 200 kW electric motor produces 268 hp, for example.
Why do European car specs list kW?
EU regulations require power to be stated in kW as the official unit. Manufacturers include hp in parentheses for market familiarity, but the kW figure is the legally binding specification.
What is metric horsepower and how does it differ from mechanical horsepower?
Metric horsepower (PS, from Pferdestärke) = 0.7355 kW. Mechanical (imperial) horsepower = 0.7457 kW. They are close but not identical: 1 metric hp = 0.9863 mechanical hp. European brochures often use metric hp (PS), while US specs use mechanical hp.